package com.ruoyi.framework.interceptor;

import java.lang.reflect.Method;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ruoyi.common.constant.BusinessConst;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.system.domain.wx.WxUser;
import com.ruoyi.system.service.wx.IWxUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import com.alibaba.fastjson2.JSON;
import com.ruoyi.common.annotation.RepeatSubmit;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.ServletUtils;

/**
 * 防止重复提交拦截器
 *
 * @author ruoyi
 */
@Component
public abstract class RepeatSubmitInterceptor implements HandlerInterceptor {

    @Autowired
    private IWxUserService wxUserService;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 处理app请求路径: 登录放行,其他则判断token是否有效
        String uri = request.getRequestURI();
        System.out.println("请求接口:"+uri);
        // 微信接口
        if (uri.startsWith("/wx/")) {
            // 不是登录接口
            if (!uri.equals(BusinessConst.RequestURI.LOGIN_URI)) {
                String token = request.getHeader("token");
                if (StringUtils.isNotBlank(token)) {
                    WxUser wxUser = wxUserService.selectWxUserBySession(token);
                    if (wxUser == null) {
                        return false;
                    } else {
                        request.setAttribute("userId", wxUser.getUserId());
                    }
                } else {
                    System.out.println("================没有传递Token");
                    return false;
                }
            }
        }

        // ruoyi
        if (handler instanceof HandlerMethod) {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
            if (annotation != null) {
                if (this.isRepeatSubmit(request, annotation)) {
                    AjaxResult ajaxResult = AjaxResult.error(annotation.message());
                    ServletUtils.renderString(response, JSON.toJSONString(ajaxResult));
                    return false;
                }
            }
            return true;
        } else {
            return true;
        }
    }

    /**
     * 验证是否重复提交由子类实现具体的防重复提交的规则
     *
     * @param request
     * @return
     * @throws Exception
     */
    public abstract boolean isRepeatSubmit(HttpServletRequest request, RepeatSubmit annotation);
}
